The correct answer is (c.) outer. The moon's average density is about the as the outer layer of the Earth. The average density of moon is about 3.34 g/cm<span>3 and the earth's outermost layer is almost similar to it. </span>
Answer:
Around the world the most significant restriction on access to potable water is money. While access to raw water sources, clean or otherwise, is important, the purification process itself is expensive. Once water has been rendered potable, it is important that it be delivered without reintroducing contamination.
The main ethnic groups are White, African American, Native American, Alaska Native, Pacific Islander, Asian, and Native Hawaiian.
White=72.4%
African American=12.6%
Asian=4.8%
Alaska Native=0.9%
Native Hawaiian and other Pacific Islander=0.2%
Other 6.2%
Two or more races 2.9%
The 5 most languages spoken in the US are English, Spanish, Chinese, French, and Tagalog. But in all there are 25 languages spoken in the US. I am unsure of the percentages of those though.